Post #2059774
2026-05-05 09:16 UTC
Its 555 Tmer day! The 555 timer is 55 years old! #555Timer #555TimerDay
https://www.ti.com/lit/ds/symlink/lm555.pdf?ts=1777974716675&ref_url=https%253A%252F%252Fwww.ti.com%252Fsitesearch%252Fen-us%252Fdocs%252Funiversalsearch.tsp%253FlangPref%253Den-US%2526nr%253D1668%2526searchTerm%253D555+timer
Replies (4)
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@NickT6630@mastodon.scot 2026-05-05 09:17
The 555 Timer is a small black plastic chip with 8 metal legs used in electronics for a variety of applications. It can generate square waves at a specfic frequency depending on the values of resistors and a capacitor when used as an oscillator. It can also generate one shot pulses when used as a timer.
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@giggls@karlsruhe-social.de 2026-05-05 10:01
@NickT6630@mastodon.scot I once build an exposure timer for my darkroom using such a beast. Must have been in the mid 1980ies.
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@jomo@mstdn.io 2026-05-05 10:14
@NickT6630@mastodon.scot the original Signetics datasheet can be found here: https://www.unitechelectronics.com/NE555_1972_datasheet.pdf
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@rostnicht@nerdculture.de 2026-05-05 10:53
@NickT6630@mastodon.scot EEE